A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prowers Bridge Study: Experimental and Analytical Techniques for Wind Loading Analysis at an Historic Truss Bridge
The University of Colorado at Denver has been studying the relationship between wind loading and structural response in historic truss bridges adapted to pedestrian use. Currently, many historic truss bridges with traditional timber decks would be inadequate for pedestrian conversion using the traditional "skeleton" method of modeling and the current American Association of State Highway and Transportation Officials (AASHTO) Guide Specifications for Design of Pedestrian Bridges for lateral (wind) design loads (AASHTO 1997) on the windward bottom chord members (eyebars). An experimental and analytical study was completed on the Prowers Bridge over the Arkansas River, constructed in 1909, which is located near Lamar, Colorado. The experimental study utilized data from anemometers and clamp-on modular strain transducers to provide verification of an analytical deck model of the current Prowers Bridge. This paper presents the equipment, results with methodology, and engineering applications based on the experimental and analytical response to the lateral (wind) loads at the Prowers Bridge. The overall results indicate that increasing the dead load of the deck and accounting for the stiffening effect of the deck in the analytical model allows the windward bottom chord eyebars to satisfy AASHTO lateral (wind) loading requirements. In summary, this research provides useful applications to aid rehabilitation and restoration of historic vehicular truss bridges for pedestrian use.
Prowers Bridge Study: Experimental and Analytical Techniques for Wind Loading Analysis at an Historic Truss Bridge
The University of Colorado at Denver has been studying the relationship between wind loading and structural response in historic truss bridges adapted to pedestrian use. Currently, many historic truss bridges with traditional timber decks would be inadequate for pedestrian conversion using the traditional "skeleton" method of modeling and the current American Association of State Highway and Transportation Officials (AASHTO) Guide Specifications for Design of Pedestrian Bridges for lateral (wind) design loads (AASHTO 1997) on the windward bottom chord members (eyebars). An experimental and analytical study was completed on the Prowers Bridge over the Arkansas River, constructed in 1909, which is located near Lamar, Colorado. The experimental study utilized data from anemometers and clamp-on modular strain transducers to provide verification of an analytical deck model of the current Prowers Bridge. This paper presents the equipment, results with methodology, and engineering applications based on the experimental and analytical response to the lateral (wind) loads at the Prowers Bridge. The overall results indicate that increasing the dead load of the deck and accounting for the stiffening effect of the deck in the analytical model allows the windward bottom chord eyebars to satisfy AASHTO lateral (wind) loading requirements. In summary, this research provides useful applications to aid rehabilitation and restoration of historic vehicular truss bridges for pedestrian use.
Prowers Bridge Study: Experimental and Analytical Techniques for Wind Loading Analysis at an Historic Truss Bridge
Jacobson, Veronica R. (author) / Rutz, Frederick R. (author) / Rens, Kevin L. (author)
Fourth Forensic Engineering Congress ; 2006 ; Cleveland, Ohio, United States
Forensic Engineering (2006) ; 225-241
2006-10-03
Conference paper
Electronic Resource
English
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